Plug wires- Solid or spiral?
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Plug wires- Solid or spiral?

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    Senior Member Ronboats's Avatar
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    Question Plug wires- Solid or spiral?

    I have a Vertex mag and have heard it doesn't matter if I use one or the other. Is there any reasdon not to use spiral core wires? Or any reason TO use them? I have always thought solid was better.

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    Senior Member Hass828's Avatar
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    I've just been through this, you should run the solid cores if you dont have any other electronics that would be affected.
    I ran helically wound suppression cores for a long time , to keep the efi noise from messing with my boost controler,but I've been having a little issue as of lately so I think I'm going to try going with the solid cores and a manual boost controller.
    Any mag shop will tell you to run the solid cores, why would you want to put a resistor between the mag and your plugs ?

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    Senior Member Morg's Avatar
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    Run solid.
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    Senior Member EVILFORCE's Avatar
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    Solids if you are not running a electronically controlled injection system. If you have any on-board electronics use the spirals.
    No Fool Like A Old Fool is there?

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    Senior Member VDRIVERACING's Avatar
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    Quote Originally Posted by Ronboats View Post
    I have a Vertex mag and have heard it doesn't matter if I use one or the other. Is there any reasdon not to use spiral core wires? Or any reason TO use them? I have always thought solid was better.
    My only issue with the solids, is I want to use a radio for my spotter, but that's a no-go without switching to the spiro wraps. So...in researching this topic (to death I might add...), I sought out and spoke with some of the top minds in the field, among which was the head engineer at MSD.

    Bottom line: The spiro core will deliver less (but perhaps more than enough) voltage to the spark plug than the solid core wire. HOWEVER!....I was also told that in my application(blown gas BBC, maybe 12 lbs of boost) that it would probably not be noticable in terms of its affect on HP. It might be noticable in far more extreme applications.

    In preparing for a dyno run next month, I contacted some of the local dyno shops and was told the solid core wire may mess with their instruments, so I'm not sure we're even going to able to test with both type wires (but we'll try!!!).

    All that said, I agree, in principle, with the others. If you do not need shielding for electronics, the solids are "best". Sort of like $4,000 custom made/tuned stainless steel step headers are "best". All that matters may be what you need.
    Last edited by VDRIVERACING; 12-26-2009 at 04:05 PM.

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    steelcomp was here
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    You can run grounded wire shielding.
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    Default Faraid

    There is a donut shaped deal called a "faraid" or something like that, that shields the mag "noise" from the radio..........Ray
    LOUD BOATS SAVE LIVES

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    Senior Member alkyexpress's Avatar
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    Run Solid,,,,,,,,, vertex / joe hunt mag's need solid to deliver what power they have,,, if you try to talk to a spotter on a radio turn the motor off , you wouldn't be able to hear him very well anyway,lol, ........Eric



    Ps: Joe hunt recommend's solid wire's.........

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    Senior Member VDRIVERACING's Avatar
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    Quote Originally Posted by alkyexpress View Post
    Run Solid,,,,,,,,, vertex / joe hunt mag's need solid to deliver what power they have,,, if you try to talk to a spotter on a radio turn the motor off , you wouldn't be able to hear him very well anyway,lol, ........Eric



    Ps: Joe hunt recommend's solid wire's.........
    Yes, Joe Hunt and Don Zig are going to tell you solid core. Those men are great at what they do, no disrespect, but I needed more information. I wanted to know what the performance difference would be in scientific terms that could be measured.

    The point I tried to make is that only very exotic setups actually NEED the full voltage. For example---I'm just using these numbers for comparison sake(not actual!!!)--if your gas motor will fire with 20K volts, then 25K volts at the plug is not necessary to reach THAT engine's potential.

    And, BTW, the radio actually works pretty good. I highly recommend the custom "ear-canal" ear phones.

  12. #10
    steelcomp was here
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    I bet there's some real high HP exotics running with spiral core wires. Spiral cores have come a LONG way.
    Kinda like picking pepper outa flysh it, isn't it?
    Last edited by scott foxwell; 12-27-2009 at 12:45 PM.
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    Not only should you run solid core wires, but non resister plugs. If you only need 25k volts, go get a mallery dual point. It will out out more than that.

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    Senior Member alkyexpress's Avatar
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    Quote Originally Posted by VDRIVERACING View Post
    Yes, Joe Hunt and Don Zig are going to tell you solid core. Those men are great at what they do, no disrespect, but I needed more information. I wanted to know what the performance difference would be in scientific terms that could be measured.

    The point I tried to make is that only very exotic setups actually NEED the full voltage. For example---I'm just using these numbers for comparison sake(not actual!!!)--if your gas motor will fire with 20K volts, then 25K volts at the plug is not necessary to reach THAT engine's potential.

    And, BTW, the radio actually works pretty good. I highly recommend the custom "ear-canal" ear phones.


    If you are going to the Dyno( and the solid's dont mess with their equipment ) take both set's and report back ,,, would like to know,,,My msd say's to run spirol wires ,,it has a elec control box thou .........Eric

  16. #14
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    I think at the level of performance most of us are at, the type of wires, headers or oil we us , isn't going to make any noticable difference. Even at the drags in the brackets. Now if this was pro stock where .001 difference means win or lose well.......Just my .02 worth.

    Of coures, I'd like to know what the dyno has to say also. Could be interesting.

    Tim

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